A stent delivery system (1) includes a self-expanding stent (10), an inner tube body (3), and a sheath (2) which contains the stent (10) within a distal portion thereof. The stent (10) can be discharged by moving the sheath (2) toward the proximal side relative to the inner tube body (3). The inner tube body (3) includes: a distal contact section (36) which is provided within a proximal portion of the stent (10) and does not enter side wall openings of the stent and a proximal contact section (35) which is located at a position rear of the proximal end of the stent (10) and close to the distal contact section (36). The stent (10) has a proximal inwardly protruding section (17a) which can make contact with the distal contact section (36) of the inner tube body (3). The proximal inwardly protruding section is located between the distal contact section (36) and the proximal contact section (35). The stent (10) does not, except in the proximal portion thereof, have a bend free end which protrudes to the proximal side.
